Very neat feature that I like better than DigitalOcean, is ability to upload your own Linux distro ISO files from a remote URL. It makes using Oracle Linux 6.5 64bit much easier (which is supported by Centmin Mod since .06 release )

Right now it seems that Vultr isn't suited for Centmin Mod usage as there's an unexplained issue with SSH connection time outs after Centmin Mod installation. Not sure if it's a conflict with CSF Firewall and their host node's internal firewall or something ? But until I can figure this out, I do not recommend using Vultr for Centmin Mod usage. See https://community.centminmod.com/threads/vultr-com-any-reviews.294/page-2#post-2924.

Centmin Mod currently runs and installs fine on DigitalOcean, Linode, RamNode, BuyVM.net, Wable.com and Backupsy VPSes which run KVM, Xen and OpenVZ based virtualisation.

Update 2: could be related Vultr has these new notices posted in client area ?

(RESOLVED) Los Angeles Network Difficulty
Jun 26 18:07 EDT
Network difficulties are currently being experienced in the Los Angeles, California location. End users may experience elevated latency levels and/or an inability to connect to services. We are working on an effort to correct the issue. We will provide additional updates here once they become available.

(RESOLVED) Los Angeles Network Connectivity Issues
Jun 27 10:33 EDT
We are experiencing networking connectivity issues with one of our upstream providers at the Los Angeles. We are working directly with our upstream providers to mitigate the issue.

Click to expand...

Update:
Looks like rebooting Vultr VPS has allowed me back in, so will try and figure out what's going on.. CSF Firewall has all the required modules to work though

Looks like installing AVG Antivirus invoked the Linux OOM Killer - might need to setup some swap disk before installing AVG Antivirus for Linux. Never ran into this problem even with DigitalOcean 512MB KVM VPS which also comes with 0 swap set out of the box. Will update the above install guide